我在mini2440开发板移植了linux2.6.35的内核，后来移植了USB无线网卡，可以ping通路由和局域网的其他电脑，但是丢包率在50%左右，
（1）请问大家有什么关于优化网络方面的建议吗？
（2）我的系统内PING不通开发板自己的IP，也PING不通127.0.0.1，请问该如何解决呢？
[root@MrMeng ~/tcpip]#ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1): 56 data bytes
ping: sendto: Network is unreachable
[root@MrMeng ~/tcpip]#ifconfig -a
eth0 Link encap:Ethernet HWaddr 80:90:90:90:90:90
inet addr:192.168.1.17 Bcast:192.168.1.255 Mask:255.255.255.0
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:918 errors:0 dropped:0 overruns:0 frame:0
TX packets:332 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:89792 (87.6 KiB) TX bytes:17084 (16.6 KiB)
Interrupt:51 Base address:0xe300
lo Link encap:Local Loopback
LOOPBACK MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr E8:4E:06:07:72:0C
inet addr:192.168.1.17 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:301 errors:0 dropped:0 overruns:0 frame:0
TX packets:305 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:26453 (25.8 KiB) TX bytes:33462 (32.6 KiB)
